@media screen and (max-width: 1320px) {
  html {
    font-size: 16px;
  }
}
@media screen and (max-width: 992px) {
  html {
    font-size: 14px;
  }
  .nav-item {
    width: 100%;
    padding: 0;
    text-align: center;
  }
  .nav-item dl {
    position: relative;
    width: 100%;
    top: 0;
    border-radius: 0;
    background-image: linear-gradient(transparent, #f1f1f1);
    opacity: 0;
    transition: all 1s ease;
  }
  .nav-item dl dd a {
    color: #9a9a9a;
    font-size: 15px;
  }
  .nav-item dl.active {
    background-image: linear-gradient(#f9f9f9, #f9f9f9);
    opacity: 1;
  }
  .elevator {
    display: none;
  }
}
@media screen and (max-width: 576px) {
  html {
    font-size: 12px;
  }
  html .navbar {
    padding-top: 6px;
  }
}
/* 产品介绍 */
/* 尺寸>992 4个 */
/* 768<尺寸<992 2个 */
/* 尺寸<768 1个 */
.product {
  margin-top: 60px;
  text-align: center;
  font-family: 'Microsoft YaHei';
}
.product .pd_title h2 {
  color: #313131;
  font-weight: 600;
  font-size: 26px;
}
.product .pd_title h2 span {
  color: #616161;
  font-weight: 400;
}
.product .pd_title p {
  color: #919191;
  font-size: 18px;
  margin: 20px 0;
}
.product .pd_content .row div {
  height: 200px;
  margin-bottom: 16px;
  transition: transform 0.5s ease;
  overflow: hidden;
}
.product .pd_content .row div:hover {
  transform: translateY(-6px);
}
.product .pd_content .row div a {
  position: relative;
  display: block;
  height: 200px;
  line-height: 200px;
  border-radius: 4px;
  font-size: 24px;
  transition: font-size 0.5s ease;
}
.product .pd_content .row div a:hover {
  font-size: 30px;
  color: #9cc8be;
  box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.5);
}
.product .pd_content .row div a::after {
  content: '';
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(transparent, rgba(0, 0, 0, 0.3));
  opacity: 0;
  transition: all 0.5s;
}
.product .pd_content .row div a:hover::after {
  opacity: 1;
}
.product .pd_content .row div a::before {
  content: '';
  display: block;
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  height: 100%;
  background-size: 40%;
  background-position: center center;
  background-repeat: no-repeat;
  transition: all 0.5s;
}
.product .pd_content .row div a:hover::before {
  top: 0;
}
.product .pd_content .row div:nth-child(1) a {
  background-color: #956e80;
}
.product .pd_content .row div:nth-child(1) a::before {
  background-image: url(../image/College/sofa.webp);
}
.product .pd_content .row div:nth-child(2) a {
  background-color: #666883;
}
.product .pd_content .row div:nth-child(2) a::before {
  background-image: url(../image/College/Medical.png);
}
.product .pd_content .row div:nth-child(3) a {
  background-color: #7daa93;
}
.product .pd_content .row div:nth-child(3) a::before {
  background-image: url(../image/College/Manage.png);
}
.product .pd_content .row div:nth-child(4) a {
  background-color: #837966;
}
.product .pd_content .row div:nth-child(4) a::before {
  background-image: url(../image/College/Machine.png);
}
.product .pd_content .more-product {
  cursor: pointer;
  margin: 1.25rem auto 0;
  width: 126px;
  height: 42px;
  border: 2px solid #1273ac;
  border-radius: 10px;
  transition: 0.4s ease;
  background-color: rgba(226, 226, 226, 0.3);
}
.product .pd_content .more-product .btn-product {
  height: 100%;
  line-height: 42px;
  color: #116291;
  font-size: 22px;
}
.product .pd_content .more-product:hover {
  background-color: #1273ac;
}
.product .pd_content .more-product:hover a {
  color: #fff;
}
.finish {
  width: 100%;
  margin-top: 18.75rem;
  padding: 1.875rem 1.25rem 1rem;
  background-color: #e7e6e6;
}
.finish .bt_top .row {
  padding: 0 40px;
}
.finish .bt_top .row li[class^=col] {
  border-bottom: 1px dashed rgba(96, 96, 96, 0.8);
}
.finish .bt_top .row li[class^=col] dl {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  margin: 0;
  color: #333;
}
.finish .bt_top .row li[class^=col] dl dt {
  text-align: center;
  font-size: 1.375rem;
  margin-bottom: 0.25rem;
}
.finish .bt_top .row li[class^=col] dl dt img {
  width: 5.625rem;
}
.finish .bt_top .row li[class^=col] dl dd {
  text-align: center;
  font-size: 1.02rem;
}
.finish .bt_top .row li[class^=col] dl dd .pl,
.finish .bt_top .row li[class^=col] dl dd .pr {
  display: inline-block;
  vertical-align: top;
  padding: 0 0.25rem;
  margin: 0;
}
.finish .bt_top .row li[class^=col] dl dd .pl a,
.finish .bt_top .row li[class^=col] dl dd .pr a {
  margin-bottom: 0.5rem;
}
.finish .bt_top .row li[class^=col] dl dd a {
  display: block;
  color: #333;
}
.finish .bt_top .row li[class^=col] dl dd a:hover {
  color: #1273ac;
}
.finish .bt_top .row li[class^=col] .ct_dl dt,
.finish .bt_top .row li[class^=col] .ct_dl dd {
  margin-bottom: 0.125rem;
}
.finish .bt_middle {
  padding: 0 30px;
}
.finish .bt_middle .row {
  text-align: center;
  border-bottom: 1px dashed rgba(96, 96, 96, 0.8);
  line-height: 1.875rem;
  font-size: 15px	;
  padding-bottom: 16px;
}
.finish .bt_bottom {
  padding: 0 30px;
}
.finish .bt_bottom ul {
  text-align: center;
  line-height: 1.875rem;
  font-size: 16px;
  margin: 0;
}
